79981720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:154

約数の個数: 192

約数和(自身を含む): 233845920

約数和(自身を除く): 153864200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 43, 49, 52, 56, 65, 70, 73, 86, 91, 98, 104, 130, 140, 146, 172, 182, 196, 215, 245, 260, 280, 292, 301, 344, 364, 365, 392, 430, 455, 490, 511, 520, 559, 584, 602, 637, 728, 730, 860, 910, 949, 980, 1022, 1118, 1204, 1274, 1460, 1505, 1720, 1820, 1898, 1960, 2044, 2107, 2236, 2408, 2548, 2555, 2795, 2920, 3010, 3139, 3185, 3577, 3640, 3796, 3913, 4088, 4214, 4472, 4745, 5096, 5110, 5590, 6020, 6278, 6370, 6643, 7154, 7592, 7826, 8428, 9490, 10220, 10535, 11180, 12040, 12556, 12740, 13286, 14308, 15652, 15695, 16856, 17885, 18980, 19565, 20440, 21070, 21973, 22360, 25112, 25480, 26572, 27391, 28616, 31304, 31390, 33215, 35770, 37960, 39130, 40807, 42140, 43946, 46501, 53144, 54782, 62780, 66430, 71540, 78260, 81614, 84280, 87892, 93002, 109564, 109865, 125560, 132860, 136955, 143080, 153811, 156520, 163228, 175784, 186004, 204035, 219128, 219730, 232505, 265720, 273910, 285649, 307622, 326456, 372008, 408070, 439460, 465010, 547820, 571298, 615244, 769055, 816140, 878920, 930020, 1095640, 1142596, 1230488, 1428245, 1538110, 1632280, 1860040, 1999543, 2285192, 2856490, 3076220, 3999086, 5712980, 6152440, 7998172, 9997715, 11425960, 15996344, 19995430, 39990860, 79981720]

約数ペア:

[(1, 79981720), (2, 39990860), (4, 19995430), (5, 15996344), (7, 11425960), (8, 9997715), (10, 7998172), (13, 6152440), (14, 5712980), (20, 3999086), (26, 3076220), (28, 2856490), (35, 2285192), (40, 1999543), (43, 1860040), (49, 1632280), (52, 1538110), (56, 1428245), (65, 1230488), (70, 1142596), (73, 1095640), (86, 930020), (91, 878920), (98, 816140), (104, 769055), (130, 615244), (140, 571298), (146, 547820), (172, 465010), (182, 439460), (196, 408070), (215, 372008), (245, 326456), (260, 307622), (280, 285649), (292, 273910), (301, 265720), (344, 232505), (364, 219730), (365, 219128), (392, 204035), (430, 186004), (455, 175784), (490, 163228), (511, 156520), (520, 153811), (559, 143080), (584, 136955), (602, 132860), (637, 125560), (728, 109865), (730, 109564), (860, 93002), (910, 87892), (949, 84280), (980, 81614), (1022, 78260), (1118, 71540), (1204, 66430), (1274, 62780), (1460, 54782), (1505, 53144), (1720, 46501), (1820, 43946), (1898, 42140), (1960, 40807), (2044, 39130), (2107, 37960), (2236, 35770), (2408, 33215), (2548, 31390), (2555, 31304), (2795, 28616), (2920, 27391), (3010, 26572), (3139, 25480), (3185, 25112), (3577, 22360), (3640, 21973), (3796, 21070), (3913, 20440), (4088, 19565), (4214, 18980), (4472, 17885), (4745, 16856), (5096, 15695), (5110, 15652), (5590, 14308), (6020, 13286), (6278, 12740), (6370, 12556), (6643, 12040), (7154, 11180), (7592, 10535), (7826, 10220), (8428, 9490)]